001    // Copyright Jul 10, 2006 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    package org.apache.tapestry.portlet;
015    
016    import org.apache.tapestry.IEngine;
017    import org.apache.tapestry.IRequestCycle;
018    import org.apache.tapestry.engine.EngineServiceLink;
019    import org.apache.tapestry.engine.IEngineService;
020    import org.apache.tapestry.engine.ILink;
021    import org.apache.tapestry.engine.ServiceEncoding;
022    import org.apache.tapestry.services.impl.LinkFactoryImpl;
023    import org.apache.tapestry.util.QueryParameterMap;
024    
025    import java.util.Map;
026    
027    
028    /**
029     * Creates {@link EngineServiceLink}s that will re-encode asset URL's
030     * using {@link IRequestCycle#encodeURL(String)}.
031     * 
032     */
033    public class PortletAssetLinkFactoryImpl extends LinkFactoryImpl
034    {
035        
036        public ILink constructLink(IEngineService service, boolean post, Map parameters,
037                boolean stateful)
038        {
039            finalizeParameters(service, parameters);
040            
041            IEngine engine = _requestCycle.getEngine();
042    
043            QueryParameterMap qmap = new QueryParameterMap(parameters);
044    
045            ServiceEncoding serviceEncoding = createServiceEncoding(qmap);
046            
047            // Give persistent property strategies a chance to store extra data
048            // into the link.
049            
050            if (stateful)
051                _persistenceStrategySource.addParametersForPersistentProperties(serviceEncoding, post);
052            
053            String fullServletPath = _request.getContextPath() + serviceEncoding.getServletPath();
054            
055            return new EngineServiceLink(_requestCycle, fullServletPath, engine.getOutputEncoding(),
056                    _codec, _request, qmap, stateful);
057        }
058    }